drm/amd/display: clear optc underflow before turn off odm clock
[ Upstream commit b2a93490201300a749ad261b5c5d05cb50179c44 ] [Why] After ODM clock off, optc underflow bit will be kept there always and clear not work. We need to clear that before clock off. [How] Clear that if have when clock off. Reviewed-by: Alvin Lee <alvin.lee2@amd.com> Acked-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Fudong Wang <Fudong.Wang@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
a06e4eb651
commit
814b756d4e
@ -425,6 +425,11 @@ void optc1_enable_optc_clock(struct timing_generator *optc, bool enable)
|
||||
OTG_CLOCK_ON, 1,
|
||||
1, 1000);
|
||||
} else {
|
||||
|
||||
//last chance to clear underflow, otherwise, it will always there due to clock is off.
|
||||
if (optc->funcs->is_optc_underflow_occurred(optc) == true)
|
||||
optc->funcs->clear_optc_underflow(optc);
|
||||
|
||||
REG_UPDATE_2(OTG_CLOCK_CONTROL,
|
||||
OTG_CLOCK_GATE_DIS, 0,
|
||||
OTG_CLOCK_EN, 0);
|
||||
|
Loading…
Reference in New Issue
Block a user